Module type Image.CanvasImage

Type of image module expected to build canvas.

type t

An image.

val width : t -> int

Width of the image.

val height : t -> int

Height of the image.

val size : t -> int

Size of the image in bytes.

val create : int -> int -> t

Create an image with given dimensions.

val blank : t -> unit

Clear the image.

val copy : t -> t

Create a copy of the image.

val add : t -> ?x:int -> ?y:int -> t -> unit

Add source image at given offset to the target image.

val has_alpha : t -> bool

Whether the image has alpha channel.

val fill_alpha : t -> int -> unit

Fill the alpha channel of the image.

val set_pixel_rgba : t -> int -> int -> Pixel.rgba -> unit

Set the RGBA value of a pixel.

val randomize : t -> unit

Fill the image with random data.

val scale : t -> t -> unit

Scale the source image to the destination image.